Dark mode
Light mode-35.22404, 149.12792
5:00pm 24/02/2018 to 12:00pm 26/02/2018
You can find out more about Design Rainfall and IFD here.
Observations for this analysis :
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
10m
13.2 mm
8:20am 25/02/2018
8:30am 25/02/2018
1 in 5.5 years
18.13 %
20m
22.2 mm
8:20am 25/02/2018
8:40am 25/02/2018
1 in 11.2 years
8.94 %
30m
29.8 mm
8:20am 25/02/2018
8:50am 25/02/2018
1 in 21.6 years
4.62 %
60m
51.2 mm
7:50am 25/02/2018
8:50am 25/02/2018
1 in 126.6 years
0.79 %
90m
60.1 mm
7:30am 25/02/2018
9:00am 25/02/2018
1 in 144.3 years
0.69 %
120m
67.7 mm
7:00am 25/02/2018
9:00am 25/02/2018
1 in 162.0 years
0.62 %
3h
75.8 mm
7:00am 25/02/2018
10:00am 25/02/2018
1 in 145.0 years
0.69 %
4h
82.1 mm
7:00am 25/02/2018
11:30am 25/02/2018
1 in 109.0 years
0.92 %
6h
85.2 mm
6:50am 25/02/2018
12:50pm 25/02/2018
1 in 79.9 years
1.25 %
9h
85.7 mm
3:30am 25/02/2018
12:30pm 25/02/2018
1 in 42.2 years
2.37 %
12h
87.0 mm
1:30am 25/02/2018
1:30pm 25/02/2018
1 in 29.1 years
3.44 %
18h
90.4 mm
7:00pm 24/02/2018
1:00pm 25/02/2018
1 in 19.0 years
5.27 %
24h
99.4 mm
6:50am 25/02/2018
6:50am 26/02/2018
1 in 19.5 years
5.13 %
30h
101.5 mm
1:30am 25/02/2018
7:30am 26/02/2018
1 in 15.8 years
6.32 %
36h
104.7 mm
6:00pm 24/02/2018
6:00am 26/02/2018
1 in 14.3 years
7.01 %
Note: A '1 in 1.0 years' estimate means that it is almost certain to occur at least once in a year, and could occur much more than once per year on average. For smaller values like this the Annual Recurrance Interval (ARI) may be of more relevance, but it is complex to calculate for common events.
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